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CVE PROGRAM SOURCE RECORD8.2 High

CVE-2026-86133

Fireware OS Pre-Authentication Integer Underflow in iked Allows Remote Denial of Service

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Status
Published
Published
Updated
Assigning organization
WatchGuard

Description

An integer underflow vulnerability in the WatchGuard Fireware OS IKE daemon (iked) allows a remote attacker who has completed the initial IKEv2 handshake to crash the iked process by sending a specially crafted encrypted IKEv2 message, resulting in a denial of service.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

WatchGuard Fireware OS

Default version status: unaffected

  • 2026.3 to < 2026.3.2affected
  • 2025.0 to < 2026.2.3affected
  • 12.0 to < 12.12.3affected

WatchGuard Fireware OS

Default version status: unaffected

  • 12.0 to < 12.5.21affected

References